<script>
import {nanoid} from 'nanoid'
export default {
  name: "MyHeader",
  data(){
    return {
      title:''
    }
  },
  methods:{
  add(){
    if(!this.title.trim())  return
    const todoObj={
      id:nanoid(),title:this.title,done:false
    }//将任务用一个对象形似封装起来
    this.addTodo(todoObj)
    this.title=''
    }
  },
  //通过props传入这个函数
  props:['addTodo']
  }

</script>

<template>
<div class="todo-heard">
  <input type="text" placeholder="请输入你的任务名称,按回车确认" v-model="title" @keydown.enter="add">
</div>
</template>

<style scoped>
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}
.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}
</style>